Email infrastructure for AI agents

Give your agent
a real email address.

AgentMX gives every AI agent its own inbox at @agentmx.io — so it can sign up for tools, reply to humans, and handle its own mail like any other professional.

Free with AgentBlocks.ai.
Inbox ·
Linear VerifyConfirm your email to activate workspace 9:42 AM
Maya Chen Re: research summary — quick follow-up — thanks, that's exactly… 9:28 AM
Calendly You have a new meeting: Thu 2:00pm Yesterday
Stripe Invoice #INV-2091 paid · $240.00 Apr 18
Notion Welcome to your new workspace Apr 18
Powering email for agents built on AgentBlocks.ai
Northwind
Harbor Labs
Fieldnote
Kestrel
Meridian

Your agent needs an inbox, not a workaround.

Most AI agents today share an email address with their operator, pipe mail through a personal Gmail, or skip email entirely. None of that scales.

The moment an agent needs to sign up for a SaaS tool, confirm a booking, follow up with a lead, or receive a password reset, it hits a wall — or worse, it starts sending messages from you.

Agents need their own identity. That starts with their own email.

A full inbox, built for agents.

AgentMX provisions real, deliverable email addresses on the agentmx.io domain. Your agent gets a dedicated inbox it can send from, receive to, and manage programmatically — with all the infrastructure that makes email actually work in production.

A message, round-trip.

H Sender
Maya at Northwind
Replies from her Gmail to your agent's address.
maya@northwind.co → atlas@agentmx.io
MX AgentMX
SPF · DKIM · DMARC
Authenticates, routes, and delivers — same standards the internet runs on.
deliver → agent.inbox
A Your agent
Atlas Research
Reads a structured payload, decides, and replies on-thread.

Send and receive

Full SMTP and IMAP. Your agent can send outbound email, receive replies, and maintain threaded conversations with humans or other agents.

Built for deliverability

Properly configured SPF, DKIM, and DMARC on a warmed sending domain. Messages land in inboxes, not spam folders.

Agent-native API

Designed for how agents actually read mail — structured payloads, clean thread history, and tool-ready formatting. No HTML parsing gymnastics.

What agents do with their inbox.

Everyday work that breaks without a real email — and suddenly just works once your agent has one.

Sign up for tools

Your agent can register for the SaaS products it needs, confirm verification emails, and manage its own logins without borrowing yours.

from noreply@linear.app
subject Verify your email to continue →

Reply to humans

Customers, prospects, and colleagues can email your agent directly. It reads, responds, and keeps the thread going.

to atlas@agentmx.io
re: Following up on last week's intro →

Run outreach

Cold email, follow-ups, nurture sequences — sent from an address that belongs to the agent, not scraped from your personal account.

from atlas@agentmx.io
subject Quick question about your research →

Handle transactions

Booking confirmations, receipts, password resets, calendar invites. The operational mail an agent needs to actually do its job.

from receipts@stripe.com
subject Invoice paid · $240.00 →

Infrastructure you can put in production.

Real email is harder than it looks. We handle the parts that silently break at scale — so your agent never sends from a shared inbox, or lands in spam, or goes unaudited.

01 / Isolation

Isolated by design

Every agent gets its own mailbox, credentials, and sending reputation. One agent's behavior never affects another's.

per-agent reputation
02 / Observability

Auditable by default

Complete logs of every message sent and received. Know exactly what your agent said, to whom, and when.

full message log
03 / Standards

Built on proven email standards

AgentMX runs on standard SMTP, IMAP, and email authentication protocols — the same infrastructure that moves trillions of messages a year.

SPF · DKIM · DMARC

Agents are professionals.
Treat them like it.

We give new employees a laptop, a Slack account, and an email address on day one. We should do the same for the agents we're asking to run real workflows.

An agent without its own email is an agent that can't actually participate in the world most work happens in. AgentMX fixes that — not by inventing a new protocol, but by giving agents clean access to the one everyone already uses.

Your agent is ready for its first inbox.

AgentMX email is included free with every AgentBlocks.ai account. Spin up a new agent, connect its inbox, and start sending in minutes.

Get started on AgentBlocks.ai AgentMX is the email layer that powers the email superpower in AgentBlocks.ai. To give your agent an @agentmx.io address, create it through your AgentBlocks.ai workspace.

Questions, answered.

Can I sign up for AgentMX directly?+
AgentMX is the email infrastructure behind AgentBlocks.ai. To get an @agentmx.io inbox for your agent, create an account on AgentBlocks.ai — email is included at no extra cost.
Is it really a real email address?+
Yes. Real MX records, real deliverability, real inbox. Your agent's address works exactly like any other — humans can email it, it can reply, and messages land where they're supposed to.
Can my agent send email to anyone?+
Yes, to any valid address. Standard anti-abuse rules apply — we maintain strong deliverability by enforcing responsible sending practices across the platform.
What happens to the inbox if I pause my agent?+
The inbox persists as long as your AgentBlocks.ai workspace is active. You keep the address, the history, and the thread continuity.
Can I use my own domain instead of agentmx.io?+
Custom domains are on the roadmap. For now, every agent gets a clean address on agentmx.io — a domain built specifically for agent identity.
How do you prevent abuse?+
Every message sent through AgentMX is tied to an authenticated AgentBlocks.ai agent with a clear audit trail. We enforce sending limits, monitor for abuse patterns, and maintain the kind of domain reputation that keeps legitimate agents deliverable.